EP 2186337 A4 20110928 - NON-RETRO-REFLECTIVE LICENSE PLATE IMAGING SYSTEM
Title (en)
NON-RETRO-REFLECTIVE LICENSE PLATE IMAGING SYSTEM
Title (de)
NICHTRETROREFLEKTIVES NUMMERNSCHILD-ABBILDUNGSSYSTEM
Title (fr)
SYSTÈME IMAGEUR DE PLAQUE D'IMMATRICULATION NON RÉTRORÉFLÉCHISSANTE
Publication
Application
Priority
CA 2007001400 W 20070808
Abstract (en)
[origin: WO2009018647A1] An infrared illuminator and camera system for high contrast imaging of non-retro-reflective license plates utilizing a combination of temporal filtering via pulsed LED illumination, spectral filtering using high transmission narrow band pass optical filters placed directly on the CCD sensor, and an IR sensitive camera with adjustable computer controlled settings to produce high definition, high contrast images of a wide range of both retro-reflective and non-retro-reflective surfaces including vehicle license plates, ISO shipping containers, and transport trucks with DOT ID numbers on fenders for use in weigh in motion systems, and can operate in all lighting conditions from total darkness to bright sunlight.
IPC 8 full level
G06K 9/20 (2006.01); G06V 10/147 (2022.01); G08G 1/017 (2006.01); G08G 1/054 (2006.01); H04N 5/30 (2006.01); H04N 7/18 (2006.01)
CPC (source: EP US)
G06V 10/147 (2022.01 - EP US); G08G 1/054 (2013.01 - EP US); H04N 23/56 (2023.01 - EP US); H04N 23/74 (2023.01 - EP US)
Citation (search report)
- [XYI] GB 2248994 A 19920422 - SECR DEFENCE [GB], et al
- [XAI] EP 1246118 A1 20021002 - PIPS TECHNOLOGY INC [US]
- [IA] US 5809161 A 19980915 - AUTY GLEN WILLIAM [AU], et al
- [I] US 2007133844 A1 20070614 - WAEHNER GLENN C [US], et al
- [Y] US 2006147191 A1 20060706 - KIM DAE-HWAN [KR]
- [A] GB 2280027 A 19950118 - KNOTT JAMES [GB]
- [Y] GB 2272278 A 19940511 - CANCER RES CAMPAIGN TECH [GB]
- See references of WO 2009018647A1
Citation (examination)
- JP 2005241841 A 20050908 - MITSUBISHI ELECTRIC CORP
- US 2005285016 A1 20051229 - KONG YUNG-CHEOL [KR], et al
- US 2004165098 A1 20040826 - IKEDA OSAMU [JP]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2009018647 A1 20090212; CN 101919246 A 20101215; EP 2186337 A1 20100519; EP 2186337 A4 20110928; US 2012002045 A1 20120105
DOCDB simple family (application)
CA 2007001400 W 20070808; CN 200780100190 A 20070808; EP 07800441 A 20070808; US 67258110 A 20100208